Adhesives has developed a solvent-free, faster alternative to the aerosol
adhesives commonly used in the vacuum infusion process. Called VAC-TAC, the
adhesive system is used for securing and positioning reinforcement materials in
vacuum-infused composites. It has been designed to hold in place typical
vacuum-processing products such as reinforced fabrics, foam, balsa, bleeders,
breathers, peel plies and release films used in even the largest composite
material structures, benefiting composites manufacturers.
Boat Builders Delighted with the System
A number of boat builders
have already switched to the system with dramatic affect. One such company is
South African ocean-going catamaran builder African Cats. This tech-savvy
company had used a traditional aerosol contact adhesive to hold foam and other
intermediate materials used during the vacuum forming of their one-piece hulls
and lower decks in place for years. However, when they tested the VAC-TAC
system they found a number of benefits.
“Using the VAC-TAC system, we found we could build the composite structures
much faster, saving time and reducing production cost,” said Managing Director
Gideon Goudsmit. “We also eliminated health and safety issues because the old
system depended on us using a solvent-based contact adhesive. Our staff is much
happier and we have no environmental issues - a win-win situation.”
Sprayable Hot Melt Gives Immediate Bond
The VAC-TAC system incorporates
the TEC 6300 spray hot-melt glue gun, six meters of hose, VAC-TAC adhesive and
toolbox/carry case. The special adhesive is supplied in hot-melt cartridge form
and the glue gun is connected to an air and electrical supply. The adhesive is
melted inside the glue gun chamber and sprayed directly onto one of the
substrates. The materials can be bonded instantly, although the adhesive
remains tacky for up to five minutes, allowing for positioning of the
substrates. VAC-TAC is fully adjustable, providing a variety of spray patterns
and coating widths.
Once the reinforcement materials are laid up, resin and vacuum feed pipes can
be positioned using the same adhesive system, speeding up this part of the
infusion lay-up process.
VAC-TAC is said to overcome the traditional problems encountered in this
process while offering even lower processing costs. The adhesive has higher
instant tack than aerosols; is solvent free; has no shelf life; requires no
transport or storage issues; has no waste; and carries no packaging disposal
For more information, phone 012-68-885800 or visit www.poweradhesives.com.